3D photothermal reconstruction of subsurface defects in notched multidirectional CFRP laminates due to tensile fatigue loading

L. Gahleitner, G. Thummerer, B. Reitinger, Klarissa Meirer, G. Mayr

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents results from 3D photothermal reconstruction of real subsurface defects in carbon fiber-reinforced polymers using the virtual wave concept. We apply pulsed thermography during and after interrupted fatigue loading in tensile-tensile configuration for notched multidirectional laminates. In addition, we discuss the influence of the ambient conditions from in-situ photothermal testing on the virtual wave signal. The results obtained from 3D photothermal reconstruction are directly compared with those obtained from laser ultrasound testing. To summarize, we demonstrate a practicable and fast 3D photothermal evaluation of subsurface defect evolution utilizing the virtual wave concept.

Original languageEnglish
Article number102702
JournalNDT & E INTERNATIONAL
Volume131
DOIs
Publication statusPublished - Oct 2022

Keywords

  • Fibrous composites
  • Multidirectional laminates
  • Photothermal reconstruction
  • Pulsed thermography
  • Subsurface defects
  • Virtual wave concept

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